Internal combustion engine



J y 7, 1931- STORK 1,813,328

INTERNAL COMBUSTION ENGINE Filed March 14, 1929 3 Sheets-Sheet l j gyf.

J In venior Law/wave 'i'or/z Attorney July 7, 1931. L. STORK INTERNAL COMBUSTION ENGINE Filed March 14, 1929 3 Sheets-Sheet 2 -Invenior .Ziewrenae 670173 1 Attorney July 7, 1931. I s'f-o 1,813,328

I INTERNAL COMBUSTION ENGINE Filed March 14, 1929 3 Sheets-Sheet 3 7/ Inventor Jazz/2192206 6701' A itorney Patented July 7, 1931 UNITED STATES PATENT OFFICE LAWRENCE: S'ICiR-K, OF WALSH, ILLINOIS INTERNAL COMBUSTION ENGINE Application filed March 14, 1929. Serial No. 346,998.

The present inventionhas reference generally to that class of invention known as internal combustion engines and more-pan anced manner so as to provide for smooth operation with a minimum amount of vibration.

Another very important object of the in.-

vention resides in the provision of an engine of this nature wherein maximum power is obtained by the employmentof a minimum number of parts so asto reduce the cost of upkeep, replacement, to a considerable ex tent. Y

A still further very important object of the invention resides in the provision of an improved internal combustion engine of this type which may be manufactured at a rela- 3 tively low cost.

,With the-above and numerous other obje 'cts in view as will appear as the descrip tion proceeds, the invention resides in certain novel features of construction, and in the combination and arrangement of parts as will be hereinafter more fully described and claimed,

In the drawings:- 7 Figure 1 is a side elevation of the engine embodying the features of my invention,

Figure 2 is a vertical longitudinal section therethrough,

Figure 3 is a vertical transverse section therethrough,

Figure 4 isa fragmentary top plan view of one of the cylinders and valve structure associated therewith, and v Figure 5 is an end elevation of the crank shaft. Referring to the drawings in detail it will be seen that the numeral 5 denotes a casing with a plurality of vertical cylinders 6 formed therein, in the present instance there being three cylinders: An upper longitudinally spaced head structure 7 is formed to fit over the casing and has head ends 8 therein to provide firing chambers 9 registering'with the cylinders 6 and having spark plug openings Head elements 11 are formed in the casing one at the bottom of each cylinder 6- being provided with firing chamber 12 registering therewith. The casing 5 is formed with water jackets 14 in communication with water jackets 16 inthe head structure 7 andjackets 16 in the head elements 11.

A crank case 17 is mounted below the casing and its head element 11 and has a crank shaft 19 journaled in bearings 20 and 21 at the ends of the crank case. Plungers 22 depend from thehead elements 11 and termi. nate at their bottom'ends .in bearings 23 in which the crank case shaft 19is journaled.

Thus in this engine there is provided five bearings for the crank shaft. To each side of each bearing 23, the crank shaft is'prow I vided with a crank 24. J

The crank 24 to each side ofeach bearing 23 e tends in the same direction. The cylinders 15 are provided each with a pair of oppositely disposed longitudinally extending slots 25. A piston 26 is mounted for vertical rectilinear movement in the cylinder and has a wrist pin 27 extending transversely and diametrically through the central portion thereof and the ends of thewrist pin extend out through the slots '25 and areengaged by connecting rods 28 which are also engaged with the cranks 24.

To one side of the casing there is formed valve casings 30 one at the bottom and one at the top of the cylinderand these casings are divided into exhaust and intake branches with suitable openings 31 leading thereto from manifolds not shown. Valves 32 on stems 33 are slidable in bearings 34 formed in, the casings 30 and held seated by springs 35.

These stems are actuated by cams 36 on the cam-shaft which is operated through a chain and sprocket mechanism 36 between one end of the crank shaft and one end of the cam shaft. This chain and sprocket mechanism is mounted in a housing 37 formed on 5 one end of the casing 35. Spark plugs are mounted in theopenings 10 and spark plugs 10a are mounted in openings 10b leading into the firing chambers 12.

The valves 32 and the spark plugs are 0 turned upon the four cycle principle so that the engine shown herein is equal to the ordinary type of cylinder engine.

It is thought that the construction,- operation, utility and advantages of this invention will now be quite apparent without a more detailed description thereof.

the ends thereof in which said crank shaft is journaled, and means ope'ratively connecting the crank shaft to the cam shaft.

In testimony whereof I alfix my signature.

LAWRENCE STORK.

The present embodiment of the invention has been disclosed in considerable detail merely for the purposes of exemplification 9 since in actual practice it attains the features of advantage enumerated as desirable in the statement of the invention and the above description. 1

It will be apparent that changes in the de- 5 tails of construction, and in the combination and arrangement of parts may be resorted to without departing from the spirit or scope of the invention as hereinafter claimed or sacrificing any of its advantages. 9 Having thus described my invention, what I claim as new is:

An engineof the class described comprising a casing, a plurality of spaced parallel cylinders formed in the casing, a unitaryhead 5 structure on one end of the casing having head elements formed therein with firing chambers registering with the cylinders, head elements 1 at the other ends of the cylinders with firing chambers formed therein, upper and lower valve chambers formed integrally on one side of the casing communicating with the firing chambersadjacent one side thereof, a cam shaft mounted for rotation between the chambers, a closure plate secured 5 to the outer sides of the valve chambers in a manner to enclose the cam shaft, spring controlled valves controlling communication between the valve chambers and the \firing chambers and operatively engaged with the 0 cam shaft for actuation thereby, hangers depending from the last mentioned element and terminating in bearings, a crank shaft journaled in said bearing and having cranks one to each side of said bearings, said cylinders 0 having oppositely disposed slots, double ended pistons in the cylinders, wrist pins extending through the centers of the pistons and through the slots, connecting rods engaged with the ends, of the wrist pins and 0 with the cranks of the crank shaft so that there is a pair of connecting rods one to each side of each cylinder, intake andexhaustvalve means associated with the said elements, and ignition means associated therewith, a crank 5 case below the casing and having bearings at 

